TM-9-2330-356-14
SEMITRAILER, TANK: 5000 GALLON, BULK HAUL, SELF LOAD/UNLOAD M967 AND M967A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, AUTOMOTIVE M969 AND M969A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, UNDER/OVERWING AIRCRAFT M970 AND M970A1
TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1990
TM-9-2330-356-14 - Page 358 of 528
TM 9-2330-356-14
b.
A thermostatic element controls shutter opening
which limits air flow when the engine is cold.
c.
When the engine air temperature reaches
approximately 120°F (49°C) the shutter begins to open.
The shutters are completely open at 140°F
(60°C) under full-rated load.
7-4.
Fuel System (Fig. 7-2)
a.
The engine fuel system consists of two pressure
systems: the low pressure system and the high pressure
system.
b.
In the low pressure system, two fuel pumps (in
series) draw fuel from the fuel tank and force the fuel
through two fuel filters to the injection pump.
c.
In the high pressure system, the fuel injection
pump forces fuel, under high pressure, to the fuel
inject ion nozzles.
d.
The injection nozzles provide fuel to each
combustion chamber of the engine. A small quantity of
unused fuel is returned from the injectors and injector
pump to the fuel tank.
Figure 7-2. Fuel System.
7-2
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